﻿/*    
    OpenMheg - A free MHEG-5 library
    Copyright (C) 2008 Dharmesh Malam

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
using System;
using System.Collections.Generic;
using System.Text;
using ASN1Decoder.Builders.Nodes;
using Core.Model;
using System.Drawing;
using Exceptions;
using Core.Model.Groups;

namespace ASN1Decoder.Builders
{
    internal class SceneBuilder
    {
        public static Scene Build(TaggedNode node)
        {
            var scene = new Scene();

            GroupBuilder.Build(node, scene);

            TaggedNode e; 
            
            if ((e =  node[ASN1ContextCodes.C_INPUT_EVENT_REGISTER]) != null)
                scene.InputEventRegister = e.First.IntValue;

            if ((e =  node[ASN1ContextCodes.C_SCENE_COORDINATE_SYSTEM]) != null)
                scene.SceneCoordinate = BuildSceneCoordinate(e);

            if ((e =  node[ASN1ContextCodes.C_ASPECT_RATIO]) != null)
                scene.AspectRatio = (double)e.First.IntValue / (double) e.Second.IntValue;

            if ((e =  node[ASN1ContextCodes.C_MOVING_CURSOR]) != null)
               scene.MovingCursor = e.First.BoolValue;

            //Next scene TODO
            if ((e = node[ASN1ContextCodes.C_NEXT_SCENES]) != null)
                throw new OpenMhegException("TODO:Add support for Next_Scenes");

            return scene;
            
        }

        private static Size BuildSceneCoordinate ( TaggedNode node )
        {
            int? xScene = node.First.IntValue;
            int? yScene = node.Second.IntValue;
            Size ret;

            if ( xScene != null && yScene != null )
                ret = new Size( xScene.Value, yScene.Value) ;
            else
                throw new Exception( "Can't decode x/yscene" );

            return ret;
    
        }
    }
}


